diff --git a/src/AggregateFunctions/AggregateFunctionCount.cpp b/src/AggregateFunctions/AggregateFunctionCount.cpp
index 01099853364..25f991ab693 100644
--- a/src/AggregateFunctions/AggregateFunctionCount.cpp
+++ b/src/AggregateFunctions/AggregateFunctionCount.cpp
@@ -5,6 +5,12 @@
 
 namespace DB
 {
+
+namespace ErrorCodes
+{
+    extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
+}
+
 struct Settings;
 
 AggregateFunctionPtr AggregateFunctionCount::getOwnNullAdapter(
diff --git a/src/AggregateFunctions/AggregateFunctionQuantile.cpp b/src/AggregateFunctions/AggregateFunctionQuantile.cpp
index ba59759e745..4d37ec69d26 100644
--- a/src/AggregateFunctions/AggregateFunctionQuantile.cpp
+++ b/src/AggregateFunctions/AggregateFunctionQuantile.cpp
@@ -14,6 +14,7 @@ struct Settings;
 
 namespace ErrorCodes
 {
+    extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
     extern const int ILLEGAL_TYPE_OF_ARGUMENT;
     extern const int NOT_IMPLEMENTED;
 }